CN102996456A - Rotation type compressor oil pump apparatus - Google Patents

Rotation type compressor oil pump apparatus Download PDF

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Publication number
CN102996456A
CN102996456A CN2011102736730A CN201110273673A CN102996456A CN 102996456 A CN102996456 A CN 102996456A CN 2011102736730 A CN2011102736730 A CN 2011102736730A CN 201110273673 A CN201110273673 A CN 201110273673A CN 102996456 A CN102996456 A CN 102996456A
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CN
China
Prior art keywords
oil
fluid
slide plate
cylinder
supplementary bearing
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CN2011102736730A
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Chinese (zh)
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CN102996456B (en
Inventor
小津政雄
熊指挥
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安徽美芝精密制造有限公司
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Priority to CN201110273673.0A priority Critical patent/CN102996456B/en
Publication of CN102996456A publication Critical patent/CN102996456A/en
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Publication of CN102996456B publication Critical patent/CN102996456B/en

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Abstract

The invention relates to a rotation type compressor oil pump apparatus, wherein a motor and a compression mechanism are arranged inside a sealed housing, the bottom of the housing is provided with an oil tank, oil is stored in the oil tank, the motor comprises a rotor, the compression mechanism comprises a cylinder, a piston and a sliding vane are arranged inside a cylinder compression chamber of the cylinder, a sliding vane chamber for holding the sliding vane is arranged on the cylinder, an eccentric crank shaft is fixed inside the rotor, a main bearing for supporting the eccentric crank shaft and a sub-bearing for supporting the eccentric crank shaft are respectively arranged on both sides of the cylinder, and oil grooves are arranged on the eccentric crank shaft and at least between the eccentric crank shaft and the main bearing. The rotation type compressor oil pump apparatus is characterized in that a communication path is arranged between the sliding vane chamber and the oil tank, a fluid mechanism for changing fluid resistance through changing a flow direction of a fluid is arranged in the communication path, oil in the oil tank passes through the fluid mechanism and flows into the oil groove through reciprocating movement of the sliding vane, a by-pass hole is arranged inside the eccentric crank shaft along an axial direction, and both ends of the by-pass hole are provided with openings. The rotation type compressor oil pump apparatus has characteristics of simple and reasonable structure, flexible operation and wide application range.

Description

The oil pump device of rotary compressor

Technical field

The present invention relates to the oil pump device of a kind of rotary compressor, particularly a kind of rotary compressor.

Background technique

Generally be by thin plate fixing in the slotted hole in the axle center that is arranged on eccentric crankshaft oil to be accelerated along centrifugal direction to the fuel system of the compressing mechanism of rotary compressor at present, thereby make the upper centrifugal pump mode of inhaling of oil.Behind the slotted hole of this structure of processing, the rigidity of eccentric crankshaft can weaken, thereby affects the Safety performance of compressor.

Summary of the invention

Purpose of the present invention aims to provide the oil pump device of the rigidity of a kind of simple and reasonable, flexible operation, eccentric crankshaft rotary compressor strong, applied widely, to overcome deficiency of the prior art.

Press the oil pump device of a kind of rotary compressor of this purpose design, be provided with motor and compressing mechanism in the housing of sealing, the bottom of housing is provided with oil sump, store oil in the oil sump, motor comprises rotor, compressing mechanism comprises cylinder, be provided with piston and slide plate in the cylinder compression chamber of cylinder, be provided with the slide plate chamber of taking in slide plate on the cylinder, eccentric crankshaft is fixed in the rotor, support the main bearing of eccentric crankshaft and the both sides that supplementary bearing is separately positioned on cylinder, on the eccentric crankshaft and at least be provided with oil groove between eccentric crankshaft and the main bearing, it is characterized in that being provided with communication paths between slide plate chamber and the oil sump, in this communication paths, be provided with the hydraulic mechanism that changes fluid resistance by the flow direction that changes fluid, by the to-and-fro motion of slide plate, make the oil in the oil sump pass through hydraulic mechanism, flow in the oil groove.

Be provided with vertically by-pass hole in the described eccentric crankshaft, the both ends open of by-pass hole.

The upper space opening that the upper end of described by-pass hole surrounds jointly towards the loam cake by motor and housing, the lower end of by-pass hole is towards the exhaust silencer opening that is installed on the supplementary bearing.

Described hydraulic mechanism comprises large inlet side and the little outlet side of circulation area of circulation area that connects by communicating passage.

Described communication paths comprises fuel supply line, and hydraulic mechanism comprises the first fluid element, and the lower end of fuel supply line is communicated with oil sump, the upper end of fuel supply line is communicated with the slide plate chamber, the upper end of fuel supply line is provided with the first fluid element, and wherein, the inlet side of first fluid element is towards the slide plate chamber.

Described hydraulic mechanism also comprises the second fluid element, be provided with in the supplementary bearing towards the first oil supply gallery of slide plate chamber opening and the second oil supply gallery that is connected with the first oil supply gallery, the second oil supply gallery is towards the supplementary bearing oil groove opening that is arranged on the supplementary bearing, the second fluid element is arranged in the second oil supply gallery, wherein, the inlet side of second fluid element is towards the supplementary bearing oil groove.

The present invention has connected to the oil sump opening and has the fuel supply line of first fluid element and supplementary bearing oil groove opening is had the second oil supply gallery of second fluid element in the slide plate chamber of sealing.Reciprocating slide plate can change the volume in slide plate chamber, therefore the oil in the oil sump is drawn onto in the supplementary bearing oil groove by the second fuel feeding path through fuel supply line.Afterwards, oil moves to the oil groove of eccentric crankshaft.

After the present invention has adopted above-mentioned technological scheme, avoid machining hole in eccentric crankshaft, thereby improved the rigidity of eccentric crankshaft.Rotary compressor among the present invention can be applied in air conditioner, freezing machine, the water heater, has simple and reasonable, flexible operation, characteristics applied widely.

Description of drawings

Fig. 1 is the broken section structural representation of first embodiment of the invention.

Fig. 2 is the local structure for amplifying schematic diagram of the first oil supply gallery and the second oil supply gallery.

Fig. 3 is the sectional structure schematic diagram of fuel supply line.

Fig. 4 is the sectional structure schematic diagram of second fluid element.

Fig. 5 is the broken section structural representation of second embodiment of the invention.

Fig. 6 is the broken section structural representation of third embodiment of the invention.

Among the figure: R is rotary compressor, and 2 is housing, and 2a is loam cake, 3 is outlet pipe, and 14 is suction pipe, and 15 is oil, 16 is eccentric crankshaft, and 16a is main shaft, and 16b is countershaft, 16c is by-pass hole, and 17 is main bearing, and 17a is spiral chute, 17b is exhaust port, and 18 is supplementary bearing, and 18a is the supplementary bearing oil groove, 18b is the first oil supply gallery, and 18c is the second oil supply gallery, and 18d is the fuel supply line attachment hole, 19 is eccentric shaft, and 19a is the eccentric shaft oil groove, and 21 is compressing mechanism, 23 is cylinder, and 23a is the cylinder compression chamber, and 23b is the slide plate chamber, 24 is piston, and 25 is slide plate, and 26 is sliding blade spring, 31 is motor, and 33 is rotor, and 34 is the rotor plectane, 40 is silencing apparatus, and 50 is fuel supply line, and 52a is the first fluid element, 52b is the second fluid element, and 60 is oil sump.

Embodiment

The invention will be further described below in conjunction with drawings and Examples.

The first embodiment

Referring to Fig. 1, specifically represent detailed formation and the sliding vane pump oil method of the compressing mechanism 21 of rotary compressor R of the present invention.

Be provided with compressing mechanism 21 in the housing cylindraceous 2 of the sealing of rotary compressor R and be positioned at motor 31 on the compressing mechanism 21; The bottom of housing 2 is provided with oil sump 60, and oil 15 is stored in the oil sump 60.Motor 31 comprises rotor 33.

The fuel head of oil sump 60 has change according to the variation of operating conditions, but during stable operation, from the upper end of cylinder 23 to being stable near the central authorities.

Compressing mechanism 21 comprises piston 24, the slide plate 25 with piston 24 butts, the eccentric crankshaft 16 that orders about piston 24 eccentric rotaries and the main bearing 17 of support eccentric crankshaft 16 and the both sides that supplementary bearing 18 is separately positioned on cylinder 23 that are among the cylinder compression chamber 23a; Eccentric crankshaft 16 is comprised of main shaft 16a, countershaft 16b and eccentric shaft 19.

Referring to Fig. 1-Fig. 2, slide plate chamber 23b is sealed by the cylinder mounting plane of main bearing 17 and supplementary bearing 18 respectively.Be provided with communication paths between slide plate chamber 23b and the oil sump 60, in this communication paths, be provided with the hydraulic mechanism that changes fluid resistance by the flow direction that changes fluid, by the to-and-fro motion of slide plate 25, make the oil in the oil sump 60 pass through hydraulic mechanism, flow in the oil groove.

Described hydraulic mechanism comprises large inlet side and the little outlet side of circulation area of circulation area that connects by communicating passage.

Described communication paths comprises fuel supply line 50.Described hydraulic mechanism comprises first fluid element 52a, the lower end of fuel supply line 50 is communicated with oil sump 60, and the upper end of fuel supply line 50 is communicated with slide plate chamber 23b, and the upper end of fuel supply line 50 is provided with first fluid element 52a, wherein, the inlet side of first fluid element 52a is towards slide plate chamber 23b.

Described hydraulic mechanism also comprises second fluid element 52b.In supplementary bearing 18, be provided with towards the first oil supply gallery 18b of slide plate chamber 23b opening and the second oil supply gallery 18c that is connected with the first oil supply gallery 18b.The second oil supply gallery 18c has still configured second fluid element 52b towards supplementary bearing oil groove 18a opening in the second oil supply gallery 18c.Wherein, the inlet side of second fluid element 52b is towards supplementary bearing oil groove 18a.Supplementary bearing oil groove 18a is arranged on the supplementary bearing 18, towards eccentric crankshaft 16.

In addition, the second oil supply gallery 18c is connected with fuel supply line 50.Certainly, fuel supply line 50 being directly connected to the first oil supply gallery 18b or be directly connected among the 23b of slide plate chamber also is fine.

As shown in Figure 2, the tip of fuel supply line 50 is provided with and is cone shape first fluid element 52a.Fig. 3 is the sectional view of fuel supply line 50.In addition, similarly, second fluid element 52b is coniform.Fig. 4 is the sectional view of second fluid element 52b.

These flow elements, comprise first fluid element 52a and second fluid element 52b, have the large inlet side of circulation area and the little outlet side of circulation area, be characterized in: resistance can be little when oil flow to outlet side from inlet side, resistance can be very large when on the contrary, oil flow to inlet side from outlet side.

Slide plate 25 moves back and forth synchronously with the eccentric operating of piston 24, because the motion of slide plate 25, the volume of slide plate chamber 23b can produce increase and decrease.Such as, the oil that is arranged in oil sump 60 flows into slide plate chamber 23b from fuel supply line 50 by the first oil supply gallery 18b, and perhaps, the oil that is positioned at slide plate chamber 23b is from slide plate chamber 23b to fuel supply line 50 with the direction adverse current of oil sump 60.But, because the existence of the fluid resistance of first fluid element 52a so that from slide plate chamber 23b to oil sump 60 directions, whole oil of flowing into the slide plate chamber 23b can not return.Therefore, the oil that can not return travels back across in the direction of the second oil supply gallery 18c, and this oil that can not return flows out among the supplementary bearing oil groove 18a by second fluid element 52b.

Because the motion of slide plate 25 when slide plate chamber 23b makes progress oil suction from fuel supply line 50, also can be want the oil suction from supplementary bearing oil groove 18a.But, because second fluid element 52b has the same structure with first fluid element 52a, flow to slide plate chamber 23b therefore can prevent within the specific limits the oil that is positioned at supplementary bearing oil groove 18a, produce adverse current.

Like this, during slide plate 25 continuous reciprocating action, because the counterflow-preventing effect of two flow elements, the oil 15 in the oil sump 60 flows out continuously, flows out among the supplementary bearing oil groove 18a.Oil in the supplementary bearing oil groove 18a is in lubricated supplementary bearing 18, and wherein more than half oil arrives among the spiral chute 17a that arranges on the inwall of main bearing 17 outside of falling main bearing 17 from the upper end of spiral chute 17a through the eccentric shaft oil groove 19a of eccentric shaft 19.Then get back in the oil sump 60.

By the movement from supplementary bearing oil groove 18a to the oil of spiral chute 17a, lubricated countershaft 16b and eccentric shaft 19 and the main shaft 16a of eccentric crankshaft 16.Simultaneously, lubricated supplementary bearing 18, piston 24 and the main bearing 17 that is equipped with them.

In the rotary compressor in the past, in eccentric crankshaft, be provided with vertically long upper oil-sucking hole; Be provided with the cross-drilled hole that connects from inside to outside at eccentric crankshaft, cross-drilled hole is communicated with upper oil-sucking hole; By upper oil-sucking hole and cross-drilled hole, carry out the distribution of oil to several component of making relative sliding of rotary compressor.

Compare with the method for these distribution oil in the past, the present invention is to the lubricated slip surface DFF Direct Fuel Feed of needs, and is therefore simple for oil circuit; The reliability ratio of fuel feeding is higher.In addition, owing to there is no need to be used in eccentric crankshaft processing the hole of fuel feeding, therefore have the effect of the rigidity of significantly improving eccentric crankshaft.

In the technological scheme that this first embodiment discloses, used the flow direction according to oil, can change the flow element of fluid resistance and flow, because that the flow element with this function has is a variety of, therefore be not limited to the technological scheme that discloses among the first embodiment.In addition, even also can realize purpose of the present invention without second fluid element 52b, only, the oil pump amount of this moment can reduce to some extent.

In the first embodiment, in supplementary bearing 18, connect fuel supply line 50, but be based on same reason, the technological scheme that fuel supply line 50 is connected main bearing 17 or slide plate chamber 23b also can obtain equal effect and effect.

As a reference, the slide plate design example of the rotary compressor of the 3.5kw/h that uses in the domestic air conditioner described.In this design example, the sectional area of setting slide plate is 0.6cm 2, the slide plate stroke is about 10mm, because the reciprocating action of slide plate, discharge capacity is 0.6cc.When motor speed is 50rps, calculate oil that 1800cc was arranged in 1 minute by on be drawn onto in the slide plate chamber, but from experimental result, the oil mass of discharging from the second oil supply gallery 18c to supplementary bearing oil groove 18a is the about 300cc of per minute.

Consequently, the chances are about 17% for the efficient of oil pump provided by the invention, but with the centrifugal pump mode from the center hole oil suction of eccentric crankshaft was more in no way inferior in the past.In addition, according to the technological scheme that provides of the present invention, even the pasta of oil sump 60 changes up and down, the pump oil mass can not change yet, and is better than in the past centrifugal pump mode.

The second embodiment

As previously mentioned, the first embodiment there is no need oily passage to be set eccentric crankshaft 16 is interior.And in this second embodiment, configured the gas channel of up/down perforation eccentric crankshaft 16, enlarged the application area of rotary compressor design.

Referring to Fig. 5, be provided with the by-pass hole 16c that connects eccentric crankshaft 16.The both ends open of by-pass hole 16c.The upper space opening that the upper end of by-pass hole 16c surrounds jointly towards the loam cake 2a by motor 31 and housing 2.The lower end of by-pass hole 16c is towards exhaust silencer 40 openings that are installed on the supplementary bearing 18.

In addition, as shown in Figure 5, append rotor plectane 34 at rotor 33 because the oil of rotor plectane 34 separates effect, can significantly reduce from outlet pipe 3 out tell oil mass.

The 3rd embodiment

The 3rd embodiment's design is: with respect to the gas flow reversing of the second embodiment with by-pass hole 16c.In Fig. 6, from the pressurized gas that exhaust port 17b discharges, flow to the upper space of motor 31 by by-pass hole 16c from silencing apparatus 40.Because the oil that rotor plectane 34 contains in can divided gas flow, thus can reduce from outlet pipe 3 out tell oil mass.

Therefore, by-pass hole 16c to the loop that compressing mechanism 21 sucks or discharges, can use various new designs as gas.

Claims (6)

1. the oil pump device of a rotary compressor, be provided with motor (31) and compressing mechanism (21) in the housing (2) of sealing, the bottom of housing (2) is provided with oil sump (60), store oil (15) in the oil sump (60), motor (31) comprises rotor (33), compressing mechanism (21) comprises cylinder (23), be provided with piston (24) and slide plate (25) in the cylinder compression chamber (23a) of cylinder (23), be provided with the slide plate chamber (23b) of taking in slide plate (25) on the cylinder (23), eccentric crankshaft (16) is fixed in the rotor (33), support the main bearing (17) of eccentric crankshaft (16) and the both sides that supplementary bearing (18) is separately positioned on cylinder (23), eccentric crankshaft (16) is upper and be provided with oil groove between eccentric crankshaft (16) and the main bearing (17) at least, it is characterized in that being provided with communication paths between slide plate chamber (23b) and the oil sump (60), in this communication paths, be provided with the hydraulic mechanism that changes fluid resistance by the flow direction that changes fluid, to-and-fro motion by slide plate (25), make the oil in the oil sump (60) pass through hydraulic mechanism, flow in the oil groove.
2. the oil pump device of rotary compressor according to claim 1 is characterized in that being provided with vertically in the described eccentric crankshaft (16) by-pass hole (16c), the both ends open of by-pass hole (16c).
3. the oil pump device of rotary compressor according to claim 2, it is characterized in that the upper space opening that the upper end of described by-pass hole (16c) surrounds jointly towards the loam cake (2a) by motor (31) and housing (2), the lower end of by-pass hole (16c) is towards exhaust silencer (40) opening that is installed on the supplementary bearing (18).
4. according to claim 1 to the oil pump device of 3 arbitrary described rotary compressors, it is characterized in that described hydraulic mechanism comprises large inlet side and the little outlet side of circulation area of circulation area that connects by communicating passage.
5. the oil pump device of rotary compressor according to claim 4, it is characterized in that described communication paths comprises fuel supply line (50), hydraulic mechanism comprises first fluid element (52a), the lower end of fuel supply line (50) is communicated with oil sump (60), the upper end of fuel supply line (50) is communicated with slide plate chamber (23b), the upper end of fuel supply line (50) is provided with first fluid element (52a), wherein, the inlet side of first fluid element (52a) is towards slide plate chamber (23b).
6. the oil pump device of rotary compressor according to claim 5, it is characterized in that described hydraulic mechanism also comprises second fluid element (52b), be provided with the first oil supply gallery (18b) towards slide plate chamber (23b) opening in the supplementary bearing (18), and the second oil supply gallery (18c) that is connected with the first oil supply gallery (18b), the second oil supply gallery (18c) is towards supplementary bearing oil groove (18a) opening that is arranged on the supplementary bearing (18), second fluid element (52b) is arranged in the second oil supply gallery (18c), wherein, the inlet side of second fluid element (52b) is towards supplementary bearing oil groove (18a).
CN201110273673.0A 2011-09-15 2011-09-15 Rotation type compressor oil pump apparatus CN102996456B (en)

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CN201110273673.0A CN102996456B (en) 2011-09-15 2011-09-15 Rotation type compressor oil pump apparatus

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CN102996456B CN102996456B (en) 2015-05-06

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103573623A (en) * 2013-11-01 2014-02-12 广东美芝制冷设备有限公司 Rotary compressor
CN103912501A (en) * 2014-04-22 2014-07-09 广东美芝制冷设备有限公司 Single-cylinder rotary compressor and double-cylinder rotary compressor
CN103912500A (en) * 2014-03-18 2014-07-09 安徽美芝精密制造有限公司 Horizontal rotary-type compressor
CN104314813A (en) * 2014-10-20 2015-01-28 广东美芝制冷设备有限公司 Horizontal compressor
CN104696227A (en) * 2015-03-02 2015-06-10 广东美芝制冷设备有限公司 Rotary compressor
CN106194735A (en) * 2016-08-29 2016-12-07 广东美芝制冷设备有限公司 Rotary compressor and there is its refrigerating circulatory device

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JPH06346878A (en) * 1993-06-04 1994-12-20 Hitachi Ltd Rotary compressor
JPH0861277A (en) * 1994-08-22 1996-03-08 Toshiba Corp Mechanism for feeding oil in crankshaft of compressor
US5518381A (en) * 1993-12-24 1996-05-21 Matsushita Electric Industrial Co., Ltd. Closed rotary compressor
JP2004124804A (en) * 2002-10-02 2004-04-22 Denso Corp Two-stage compressor
CN201714669U (en) * 2010-05-28 2011-01-19 广东美芝制冷设备有限公司 Rotary compressor
CN102146921A (en) * 2011-03-14 2011-08-10 广东美芝制冷设备有限公司 Rotary compressor
JP2011163227A (en) * 2010-02-10 2011-08-25 Denso Corp Compressor

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06346878A (en) * 1993-06-04 1994-12-20 Hitachi Ltd Rotary compressor
US5518381A (en) * 1993-12-24 1996-05-21 Matsushita Electric Industrial Co., Ltd. Closed rotary compressor
JPH0861277A (en) * 1994-08-22 1996-03-08 Toshiba Corp Mechanism for feeding oil in crankshaft of compressor
JP2004124804A (en) * 2002-10-02 2004-04-22 Denso Corp Two-stage compressor
JP2011163227A (en) * 2010-02-10 2011-08-25 Denso Corp Compressor
CN201714669U (en) * 2010-05-28 2011-01-19 广东美芝制冷设备有限公司 Rotary compressor
CN102146921A (en) * 2011-03-14 2011-08-10 广东美芝制冷设备有限公司 Rotary compressor

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103573623A (en) * 2013-11-01 2014-02-12 广东美芝制冷设备有限公司 Rotary compressor
CN103573623B (en) * 2013-11-01 2016-03-16 广东美芝制冷设备有限公司 Rotary compressor
CN103912500A (en) * 2014-03-18 2014-07-09 安徽美芝精密制造有限公司 Horizontal rotary-type compressor
CN103912501A (en) * 2014-04-22 2014-07-09 广东美芝制冷设备有限公司 Single-cylinder rotary compressor and double-cylinder rotary compressor
CN104314813A (en) * 2014-10-20 2015-01-28 广东美芝制冷设备有限公司 Horizontal compressor
CN104696227A (en) * 2015-03-02 2015-06-10 广东美芝制冷设备有限公司 Rotary compressor
CN104696227B (en) * 2015-03-02 2017-11-10 广东美芝制冷设备有限公司 Rotary compressor
CN106194735A (en) * 2016-08-29 2016-12-07 广东美芝制冷设备有限公司 Rotary compressor and there is its refrigerating circulatory device
CN106194735B (en) * 2016-08-29 2019-01-04 广东美芝制冷设备有限公司 Rotary compressor and refrigerating circulatory device with it

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